Plowshare



A. GUENTHNER.

PLOWSHARE.

APPLICATxoN FILED JULY 28,1919.

Patented Mar. 21, 1922.

rari-ENT OFFICE.

ALEXANDER Gr'll'EN'].".[IN}31R, OF WALSH, ALBERTA, CANADA.

PLOWSHARE.

' i Application filed July 28,

To all wlw/m it may concern.'

Be it known that l, ALEXANDER GUENTH- Nrn, of the village of `Walsh, inthe Province of Alberta, Canada, have invented certain new and usefulimprovements in Plowshares, ci which the following is a speciiication.

My invention relates to improvements in plowshares and the object ot theinvention is to devise means whereby the share and share laiidside mayhe detachably connected to the 'frogvformed integral with the mold boardand landside plate also i'orined inte'- g'ral with the mold board and itconsists essentially o1 the following arrangement and construction oiparts as hereinafter more particularly explained.

Fig. 1 is a perspective view ol? a plowshare constructed in accordancewith my invention.

Fig. 2 is a perspective view ot the part shown in Fig'. l tilted up soas to exhibit the under side and showing` the share and share landsidein a `partially detached position.

Fig. 3 is a longitudinal section through the lower portion of Fig. 1.

Fig. 4 is a plan section on line @1 -y, Fic:

In the drawings like characters ot rererence indicate the correspondingparts in each ligure.

1 indicates the landside ora plowshare 'from which the mold board 2extends. 8 indicates a 'frog which is formed integral with the landside1 and mold hoard The landsi'de 1 is provided with a landside plate 1Xthe forward -portion of which extends beneath the landside 1. Theforward end oi" the landside 1 is in angular form.

1o is a dove-tailed groove which extends longitudinally or' the frog 3and through the portion of the landside 1 adjacent to the 'trol-0;. 4Xindicates the share provided with a share-point el. All is a dove-tailedrib e1:- tending longitiulinally o1 the share aix and slidably fitting*within the groove 1. lo indicates a share landside 'formed integral withthe share-point d and corresponds substantially in shape vto the forwardportion et the landside 1. share landside 4l is provided with alongitudinal slot 12 terminating in a triangular oriiice 113. Thelandside plate 1x is provided with a longitudinal slot 11 which is inlongitudinal alignment with the slot 4t2.

5 .indicates a locking member pivotally The rearward end of 'theSpecification of Letters Patent. Patented Mar. 21, 1922.

1919. serial N o. massa mounted in the slot 11 by a cross pin 52. Theforward end o'r the locking member 5 is provided with a triangular head53 adapted to t the triangular orifice 4:3 formed in the share landside.12 is a recess formed .in the landside 1 and is provided with a grooveextension 13 in vertical alignment with the slot 11. 1 4 is an orificewhich eX- tends Jfrom. the recess 12. 6 is a spiral spring which litswithin the orifice 1'? and bears at its opposite end against theopposing` face of the triangular headi 53 so as to hold the lockingmember 5 in the horizontal position.

l/Vhen itis desired to detach the share and share landside from theremaining portion oit' the plowshare, all that it is necessary to do isto turn the plowshare on its side and press an instrument against thetriangular head 53v of the locking member 5 so as to force it inwardinto the recess 12 against the pressure of the spring 6( Whe-n this isdone the share landside may be grasped and drawn together with the share4X longitudinally of the frog 8 to carry the rib 11 out of engagementwith the groove 1o thereby detaching the share LlX from the frog lltwill. also be noted that in drawing, the share as it moveslongitudinally of the frog` does not move in a direction directly atright angles to the face of the landside 1, but in an inclined directionso that under normal conditions when the share and share landside arelocked by the locking member 5,

any tendency to move in this directionV causes the triangular head 53 toengage the orifice la and thereby prevent the movement of the share todisengage.

From this description it will be seen that l have devised a very simpledevice whereby the share and share landside may be detachably connectedto the frog and landside formed integral therewith and locked inposition in such away that the parts may be easily unlocked and detachedfor thepurpose oi renewal.

That l claim as my invention is:

ln a plowshare, the combination with the mold board, landside and frogformed integral and having a recess formed in the lower tace of thelandside ot a landside plate secured to the lower face 01"' the landsideand having an open ended slot in its forward endv` a share and sharelandside formed integral and adapted to extend beneath the aforesaidlandside in alignment with the landside plate n and having a slofJ inlongitudinal alignn'ien:J with tlie Slot of the landside plate and inVertical alignmentv with the rece-ss of the landside and terminating ina triangular orifice, al locking bar pivoted intermediately l ol: itslength in the slot of the landside plate and provided lwith a triangularhead litting the aforesaid triangular orifice, a spring located Withinthe frog and recess of the landside and bearing against the triangi1- 10lai head of the locking bar, and a tongue and groove Connection betweenthe frog and share extending longitudinally thereof.

ALEXANDER GUENTHNER.

Witnesses:

l JOHN vVVHELFORD,

ALEX. ST. DENNIS.

